The possibility of developing a cancer is probably the major concern for the use of estrogens and oral contraceptives. Early studies showed that estrogens can induce tumors of the breast, uterus, testis, bone, kidney and several other tissues in various animal species. Should we really fear?

Mammography is an imaging modality in which radiographs of breasts are taken to detect changes suggestive of cancer. It uses a low dose of x-rays for visualization of any structural changes in the architecture of breast parenchyma. Types of Mammography